Qi Wei-Kang, Guo Yi-Ling, Xue Mei, Du Jing-Ru, Li Weicheng, Li Yu-You
Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba-Ku, Sendai, 980-8579, Japan.
Bioprocess Biosyst Eng. 2015 May;38(5):905-10. doi: 10.1007/s00449-014-1334-y. Epub 2014 Dec 12.
One special self-agitation reactor, which does not require a mechanical mixer or other equipment for mixing, has been introduced. Self-agitation is affected by variation in viscosity property. To obtain and research the effect of viscosity on mixing behavior in the self-agitation reactor, Fluent® was used to create numerical simulations and to visualize the fluid flow status. The results show that when the viscosity of the liquid is 1 mPa s, the entire self-agitation results in an almost completely mixed reactor. The substrate becomes difficult to agitate, and the diffusion of the substrate and the tracer become quite after every self-agitation, as the viscosity increases. Once the viscosity is higher than 25 mPa s, the substrate and tracer could not be mixed in the entire reactor, and the reactor is recognized as the combination of several completely mixed reactors between which little exchange of liquid occurs.
已引入一种特殊的自搅拌反应器，该反应器不需要机械搅拌器或其他混合设备。自搅拌受粘度特性变化的影响。为了获得并研究粘度对自搅拌反应器中混合行为的影响，使用Fluent®进行数值模拟并可视化流体流动状态。结果表明，当液体粘度为1 mPa·s时，整个自搅拌过程使反应器几乎完全混合。随着粘度增加，底物变得难以搅拌，每次自搅拌后底物和示踪剂的扩散变得相当缓慢。一旦粘度高于25 mPa·s，底物和示踪剂在整个反应器中就无法混合，该反应器被认为是几个完全混合反应器的组合，其间几乎没有液体交换。
